Cook County Value

804 Forest Ave, Wilmette, IL 60091

5 bed / 3 bath, 4,260 sqft, built 1899, in New Trier. Assessor market value for 2026: $2,198,240.

Cook County account 05274160140000

Assessor market value
$2,198,240
Tax year 2026 · before exemptions; the assessed value on your notice is 10% of it
Living area
4,260 sqft
$516 per sqft
Year built
1899
Average quality

Compare this assessment

Start with the county value and property facts, then review appraisal comps, recent sales, and prior-year changes to decide whether the assessment is worth challenging. The comps on this page are free to review; email sign-in is only used to save a printable report.

For nearby context, browse ZIP 60091 and New Trier assessment pages.

Local guide: New Trier Township 2026 Property Tax Appeal Guide.

Appeal deadlines

The 2026 appeal windows for New Trier have closed (Assessor , Board of Review ). 2027 notices usually start in March.

Deadline rule: Set by township: file with the Assessor by your township's last file date, and with the Board of Review while your township is open there. Evidence is reviewed by the Cook County Assessor's Office or, in a separate appeal, by the Cook County Board of Review. Dates checked against the official source.

Assessment snapshot

These public CCAO records highlight what may be worth checking before you file.

  • Assessment changeThe assessor market value decreased 6.5% from $2,350,000 in 2025 to $2,198,240 in 2026.
  • Assessor market value per square footThe current public record shows about $516 per square foot before any comparable-property adjustments.
  • Nearby comparison areaThis page starts the equity review with public records for the New Trier neighborhood and ZIP 60091.
  • Neighborhood value signalAmong 809 residential records in the same neighborhood, the average assessor market value is about $540 per square foot.
  • Area year-over-year signalNearby residential records with prior-year values moved about -3.4% on average.

Comparable assessments

Similar public appraisal records selected for this property's equity comparison.

  • 244 Cumnor Rd Kenilworth, IL 60043
    4,341 sqft | $539/sqft | built 1910 | Similar size (4,341 vs 4,260 sqft); Similar lot size (17,500 vs 18,500 sqft); Same quality (Average)
    $2,340,000
  • 720 Lake Ave, Wilmette, IL 60091
    4,471 sqft | $510/sqft | built 1903 | Similar size (4,471 vs 4,260 sqft); Similar age (1903 vs 1899); Similar lot size (19,500 vs 18,500 sqft)
    $2,282,000
  • 1017 Elmwood Ave, Wilmette, IL 60091
    4,207 sqft | $505/sqft | built 1903 | Similar size (4,207 vs 4,260 sqft); Similar age (1903 vs 1899); Lot 15% smaller (15,810 vs 18,500 sqft)
    $2,125,110
  • 1044 Ashland Ave, Wilmette, IL 60091
    4,267 sqft | $542/sqft | built 1902 | Similar size (4,267 vs 4,260 sqft); Similar age (1902 vs 1899); Lot 18% smaller (15,224 vs 18,500 sqft)
    $2,312,100
  • 1231 Greenwood Ave, Wilmette, IL 60091
    4,500 sqft | $518/sqft | built 1912 | 6% larger (4,500 vs 4,260 sqft); Similar lot size (18,600 vs 18,500 sqft); Same quality (Average)
    $2,330,000

Recent comparable sales

No usable comparable sales are available in this data snapshot.

Public appraisal comparison for 2026. Prepared . Appraisal source: Cook County Assessor's Office. Sales data checked in this snapshot: . Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Down 6.5% in 2026 from 2025.

Assessor market value by tax year, with the change from the previous year listed
Tax yearAssessor market valueChangeChange %
2026$2,198,240−$151,760−6.5%
2025$2,350,000+$739,190+45.9%
2024$1,610,810−$49,760−3.0%
2023$1,660,570−$349,430−17.4%
2022$2,010,000+$755,040+60.2%
2021$1,254,960$00.0%
2020$1,254,960——
6-year total+$943,280+75.2%